Radiologist here. Virtually all surgical clips (in the US) are made of titanium and safe for MRI and have been for quite a few years now. We routinely scan people with clips that are decades old and don’t have issues.

We do frequently scan unconscious patients and typically that involves reviewing surgical records and prior imaging, questioning family about surgeries/implants, and frequently the techs will check the patients skin looking for any surgical scars. If there is any question we get X-rays first to look for metal.

Sounds like a setup for a House episode.